| 초록 |
Detecting volatile organic compounds (VOCs) is currently essential in various fields such as environmental monitoring, industrial process, and the medical field, in which semiconductor metal oxides have been representatively utilized as sensing materials due to their excellent gas-sensing performance. However, further exploitation of such semiconductor metal oxide-based gas sensors is limited by the high operating temperature, which reduces the stability and lifetime of the sensor. In this study, we tried to overcome this by combining metal oxides with MXene, a two-dimensional material with a large specific surface area and high conductivity, capable of sensing at room temperature. As a metal oxide model system, SnO2 and TiO2 were chemically bonded to MXene where each metal oxide was directly grown on the MXene sheet. The surface morphology and structure of the ternary composite were analyzed, and the gas sensing performance was evaluated by drop-casting a synthetic solution on the sensor substrate. We believe that our observations will help in the development of the future gas sensors by understanding the synergistic influence of MXene and metal oxides on the conduction pathway. |
